Trey Songz is being sued in Detroit federal court by a police officer and photographer who say they were assaulted by the singer-rapper after his December 2016 Joe Louis Arena performance.

The suit, filed Monday in U.S. District Court of the Eastern District of Michigan by Detroit Police Sgt. Robert Avery and photographer Andrew Potter, describes a scene of racial epithets, intoxication and “irate, uncooperative” behavior from the R&B star after his stage audio was cut off. Songz caused serious head injuries to both men, the suit says.

Potter, working the event as a credentialed photographer, was struck in the head by a microphone stand that Songz hurled during the ensuing commotion, “causing (Potter) to fall face first to the concrete floor."

Members of the Detroit Police’s gang unit, on hand for crowd control, soon headed to the dressing room to arrest Songz, born Tremaine Neverson. That’s where the singer “became combative” with officers, punching Avery and then landing atop him, injuring the sergeant’s hip, according to the complaint.

Songz was charged at the time with felony assault of a police officer and misdemeanor aggravated assault for injuring Potter. The singer eventually pleaded guilty to two reduced counts of disturbing the peace, and was sentenced in August to an 18-month probation, substance screening and anger-management classes.

"I'd just like to give my apologies to the city of Detroit," Songz said during the August hearing.

The suit filed today by the Mike Morse Law Firm says Avery, a 22-year Detroit Police veteran, has suffered mental anguish, permanent scarring and lost wages because of the incident.

During the dressing-room confrontation, the complaint says, Songz shouted and cursed at the officers, using racially charged language such as, “F--- you cracker white m----- f------“ and “Don’t touch me you white m----- f------.”

In his booking photo that night, attached in the complaint, Songz defiantly points his middle finger at the camera.